CN214845795U - Novel X-ray detector - Google Patents
Novel X-ray detector Download PDFInfo
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- CN214845795U CN214845795U CN202120918698.0U CN202120918698U CN214845795U CN 214845795 U CN214845795 U CN 214845795U CN 202120918698 U CN202120918698 U CN 202120918698U CN 214845795 U CN214845795 U CN 214845795U
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Abstract
The utility model discloses a novel X-ray detector; the utility model comprises a glass substrate, a scintillator, an optical fiber light cone and an image sensor which are connected in sequence; the scintillator is connected with the large end face of the optical fiber light cone, and the small end face of the optical fiber light cone is connected with the photosensitive surface of the image sensor through a colorless and transparent coupling adhesive; the scintillator is an all-inorganic nanocrystalline perovskite scintillator; the utility model discloses a traditional scintillator material of full inorganic nanocrystalline perovskite scintillator replacement, have more outstanding photoelectric properties, luminous efficacy is higher, it is simple relatively and cost-effective to prepare, and can simplify X ray detector's overall structure from this, the stratum basale of having removed traditional fluorescent screen, fiber optic panel, additional coupling layers such as reflectance coating, thereby the transmission efficiency of light has been improved, improve imaging speed, and simultaneously, because the simplification of structure makes the cost of manufacture reduce once more, the equipment volume has also been reduced.
Description
Technical Field
The utility model relates to a X ray detector technical field, in particular to novel X ray detector.
Background
An X-ray detector is a device that converts X-ray energy into electrical signals that can be recorded. It receives the radiation and then generates an electrical signal proportional to the intensity of the radiation. X-ray detectors have been widely used in medical diagnostics, industrial nondestructive testing, security monitoring, scientific research, and other fields.
The current X-ray detector is expensive, large in size and slow in imaging speed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a novel X-ray detector is provided, which can reduce the manufacturing cost and the volume of equipment and simultaneously improve the imaging speed.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a novel X-ray detector comprises a glass substrate, a scintillator, an optical fiber light cone and an image sensor which are connected in sequence;
the scintillator is connected with the large end face of the optical fiber light cone, and the small end face of the optical fiber light cone is connected with the photosensitive surface of the image sensor through a colorless and transparent coupling adhesive;
the scintillator is CsPbBr3An all-inorganic nanocrystalline perovskite scintillator.
Further, the glass substrate has a thickness greater than the scintillator.
Further, the scintillator is coated by spin coating to form a uniform and dense thin film between the glass substrate and the large end face of the optical fiber light cone.
Further, the image sensor is a scientific grade CMOS image sensor.
Furthermore, the large end face of the optical fiber taper is circular, and the small end face of the optical fiber taper is square.
Further, the coupling adhesive is epoxy glue.
Further, the glass substrate is a colorless transparent organic glass acrylic plate.
Further, the scintillator has a thickness of 200 to 300 μm, and the glass substrate has a thickness of 0.5 to 1 mm.
Further, the taper ratio of the optical fiber taper is 2:1, and the thickness is 30 mm.
The beneficial effects of the utility model reside in that: the utility model adopts CsPbBr3The all-inorganic nanocrystalline perovskite scintillator replaces the traditional scintillator materials of CsI, Tl, GOS, Tb and the like, has more excellent photoelectric property, higher luminous efficiency, relatively simple preparation and lower cost, can simplify the whole structure of the X-ray detector, removes the additional coupling layers of a base layer, an optical fiber panel, a reflecting film and the like of the traditional fluorescent screen, improves the light transmission efficiency and the imaging speed, and simultaneously reduces the manufacturing cost again due to the simplification of the structure and also reduces the volume of equipment.
Drawings
Fig. 1 is a schematic structural diagram of a novel X-ray detector according to an embodiment of the present invention;
description of reference numerals:
1. a glass substrate; 2. a scintillator; 3. a fiber taper; 4. an sCMOS camera; 5. coupling the adhesive.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a novel X-ray detector includes a glass substrate, a scintillator, an optical fiber cone and an image sensor connected in sequence;
the scintillator is connected with the large end face of the optical fiber light cone, and the small end face of the optical fiber light cone is connected with the photosensitive surface of the image sensor through a colorless and transparent coupling adhesive;
the scintillator is CsPbBr3An all-inorganic nanocrystalline perovskite scintillator.
From the above description, the beneficial effects of the present invention are: the utility model adopts CsPbBr3The all-inorganic nanocrystalline perovskite scintillator replaces the traditional scintillator materials of CsI, Tl, GOS, Tb and the like, has more excellent photoelectric property, higher luminous efficiency, relatively simple preparation and lower cost, can simplify the whole structure of the X-ray detector, removes the additional coupling layers of a base layer, an optical fiber panel, a reflecting film and the like of the traditional fluorescent screen, improves the light transmission efficiency and the imaging speed, and simultaneously reduces the manufacturing cost again due to the simplification of the structure and also reduces the volume of equipment.
Further, the glass substrate has a thickness greater than the scintillator.
From the above description, it can be seen that the glass substrate has a thickness larger than that of the scintillator as a specific embodiment of the present invention.
Further, the scintillator is coated by spin coating to form a uniform and dense thin film between the glass substrate and the large end face of the optical fiber light cone.
From the above description, scintillator spin coating forms a uniform dense thin film between the glass substrate and the large end face of the fiber taper to work.
Further, the image sensor is a scientific grade CMOS image sensor.
According to the above description, on the basis of using the novel scintillator material with higher luminous efficiency, the novel scintillator material is collocated with a high-performance scientific grade CMOS image sensor, namely, an sCMOS camera, so that the traditional CCD camera is replaced, and the performances of the detector in aspects of sensitivity, resolution, detection efficiency and the like are improved.
Furthermore, the large end face of the optical fiber taper is circular, and the small end face of the optical fiber taper is square.
From the above description, it can be seen that the large end face of the optical fiber taper is circular, and the small end face is square, as a specific embodiment of the present invention.
Further, the coupling adhesive is epoxy glue.
As can be seen from the above description, the coupling adhesive agent uses an epoxy adhesive as one embodiment of the present invention.
Further, the glass substrate is a colorless transparent organic glass acrylic plate.
As can be seen from the above description, the glass substrate is a colorless transparent organic glass acrylic plate, and does not affect the transmission of light.
Further, the scintillator has a thickness of 200 to 300 μm, and the glass substrate has a thickness of 0.5 to 1 mm.
From the above description, it is understood that the thickness of the scintillator is 200 μm to 300 μm and the thickness of the glass substrate is 0.5mm to 1mm as a specific example of the present invention.
Further, the taper ratio of the optical fiber taper is 2:1, and the thickness is 30 mm.
From the above description, a taper ratio of 2:1 and a thickness of 30mm is an embodiment of the present invention.
Referring to fig. 1, a first embodiment of the present invention is:
a novel X-ray detector comprises a glass substrate 1, a scintillator 2, an optical fiber light cone 3 and an sCMOS camera 4 which are sequentially connected, namely a scientific grade CMOS image sensor.
Wherein, the big terminal surface of optic fibre light cone 3 is circular, and the little terminal surface is square, and the even compact film of scintillator 2 spin coating formation between the big terminal surface of glass substrate 1 and optic fibre light cone 3, and the little terminal surface of optic fibre light cone 3 is connected with sCMOS camera 4's photosurface through colourless transparent coupling adhesive 5, and the thickness of glass substrate 1 is greater than the scintillator, and scintillator 2 is CsPbBr3An all-inorganic nanocrystalline perovskite scintillator.
CsPbBr of this novel adoption3All-inorganic nanocrystalline perovskite scintillators (CspbBr)3Perovskite scintillators) have the following distinct advantages over conventional CsI: Tl and GOS: Tb scintillators:
1. the traditional scintillator preparation process is complex, and the preparation conditions are harsh (more than 1700 ℃); and CspbBr3The perovskite scintillator is prepared by an improved thermal injection method, the preparation process is simple, and the preparation conditions are relatively mild (160 ℃).
2. The traditional scintillator is expensive to process, and the high end of the traditional scintillator depends on foreign import; and CspbBr3Perovskite flashThe scintillator has low cost and is independently researched and developed at home.
3.CspbBr3The perovskite scintillator emission spectrum is tunable, while the conventional scintillator emission spectrum is fixed.
In this embodiment, the coupling adhesive 5 is an epoxy resin adhesive, the thickness of the scintillator 2 is 240 μm, the taper ratio of the optical fiber taper 3 is 2:1, the thickness is 30mm, the glass substrate 1 is a colorless transparent organic glass acrylic plate, in other equivalent embodiments, the coupling adhesive 5 is a colorless transparent coupling adhesive, the thickness of the scintillator 2 is 200 μm to 300 μm, the glass substrate 1 is a colorless transparent glass substrate, and the taper ratio and the thickness of the optical fiber taper 3 can be designed according to actual requirements.
To sum up, the utility model provides a pair of novel X-ray detector has adopted CsPbBr3The full-inorganic nanocrystalline perovskite scintillator replaces the traditional scintillator materials such as CsI, Tl, GOS, Tb and the like, has more excellent photoelectric property, higher luminous efficiency, relatively simple preparation and lower cost, can simplify the whole structure of the X-ray detector, removes the additional coupling layers such as a substrate layer, an optical fiber panel, a reflecting film and the like of the traditional fluorescent screen, improves the light transmission efficiency and the imaging speed, and simultaneously reduces the manufacturing cost and the equipment volume due to the simplification of the structure; and the scientific grade CMOS image sensor is used, so that the performances of the detector in the aspects of sensitivity, resolution, detection efficiency and the like are further improved.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (9)
1. A novel X-ray detector is characterized by comprising a glass substrate, a scintillator, an optical fiber light cone and an image sensor which are sequentially connected;
the scintillator is connected with the large end face of the optical fiber light cone, and the small end face of the optical fiber light cone is connected with the photosensitive surface of the image sensor through a colorless and transparent coupling adhesive;
the scintillator is CsPbBr3An all-inorganic nanocrystalline perovskite scintillator.
2. The novel X-ray detector of claim 1, wherein the glass substrate has a thickness greater than the scintillator.
3. The novel X-ray detector of claim 1, wherein the scintillator is spin coated to form a uniform dense thin film between the glass substrate and the large end face of the fiber optic taper.
4. The novel X-ray detector of claim 1, wherein the image sensor is a scientific grade CMOS image sensor.
5. The novel X-ray detector as claimed in claim 1, wherein the large end face of the optical fiber cone is circular and the small end face is square.
6. The novel X-ray detector of claim 5, wherein the coupling adhesive is an epoxy adhesive.
7. The novel X-ray detector as claimed in claim 1, wherein the glass substrate is a colorless transparent plexiglas plate.
8. The novel X-ray detector of claim 3, wherein the thickness of the scintillator is 200 μm to 300 μm, and the thickness of the glass substrate is 0.5mm to 1 mm.
9. The novel X-ray detector as claimed in claim 6, wherein the taper ratio of the optical fiber taper is 2:1 and the thickness is 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120918698.0U CN214845795U (en) | 2021-04-29 | 2021-04-29 | Novel X-ray detector |
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| CN202120918698.0U CN214845795U (en) | 2021-04-29 | 2021-04-29 | Novel X-ray detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115390354A (en) * | 2022-07-13 | 2022-11-25 | 福州大学 | Perovskite light cone coupling X-ray camera and imaging method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115390354A (en) * | 2022-07-13 | 2022-11-25 | 福州大学 | Perovskite light cone coupling X-ray camera and imaging method thereof |
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